Sheet cutting machine



cfi. 3Q, 1945. E. J. NORDQUIST ,38

SHEET CUTTING MACHINE Filed June 19, 1944 3 Sheets-Sheet 1 INVEN TOR.

at, 3%, 1945 R. E. J. NORDQUI ST 2,387,?87

SHEET cu'rwme mcnmz" Filed June 19, 1944. 3 Shawls-Sheet 2 Pltmha 194smam T OFFICE SHEET CUTI'ING IIACHINI BonaldEJLNordqnilt,

to Amu'lcnn Maplewood, can Company, New York, corporation of New Jersey v a. nan-1m N, 1., a

Application June 19, 1944, Serial No. 541,012

Claims. ((1. 1H8) shear, each die unit holding a' plurality of removable die members, the members coacting together during the scroll cutting of sheets transversely of the web as the latter is fed between the rolls.

An object of the invention is the provision of a transverse rotary shear for scroll cutting the edges of sheets as they are being severed from 'a moving web or strip which includes novel die" carrier units mounted in pockets or grooves of the upper and lower rotary rolls, such units holding a plurality of die members in definite relation to define a scroll cutting line, the members in the upper and lower rolls co-acting together for cutting a scroll edge sheet from the web and along such a cutting line. a

Another object is the provision of a removable die carrier. unit for shearing rolls wherein a plurality of die members are assembled in accurate pattern form and are held therein by a locking plate so that the separable die members maybe ground individually to sharpen their cutting edges and to otherwise prepare them for service, the removable feature adapting the work for treatment on the bench preparatory to the carrier unit with its die parts being molmtedinto the rotary roll, such sharpening and mounting being performed in the most convenient place which Y may be separated from the place where used, thereby reducing the length of shut-downs of the machine line of the scrollcutting operation and 7 time for change over or replacement of the die members.

Numerous other objects and advantages of the invention will be apparent as it is better understood from the following description, which, taken in connection with the accomp nyin drawings, dmcloses a. preferred embodiment thereof.

Referring to the drawings: l igurelisaperspectiveviewofa P the present. invention from which parts have been broken away to illustrate more fully die'carrier units in an upper and a lower mil 0: a rotary scroll shear;

Fig.2isanenlargedtransversesectionalview through the rotary scroll shear rolls'shown 1; Fig. 3 is a perspective view drawn to an enproperly intermesh for severing a sheet-D. A

machine larged scale of a lowerrotary roll and showing a plurality of die members disposed in a die carrier a i in working position within a pocket of the unit roll; Y A

Fig.. 4 is a perspective view showing a detail of the die carrier unit with parts broken away and with certain die members separated in what might be designated an exploded position: and

Fig. 5 lsa view similar to Fig. il -but showing the die carrier unit and the clamping plate in exploded positions. x

As a preferred embodiment the drawings illustrate a rotary scroll shear A for operating on a web or strip B. ,The shear includes an upper roll it and a lower roll l3. Each roll carries a removable die carrier C which is adapted for holding a plurality of removable die members. The die members in one unit coact with die members in the associate unit to effect the scroll cutting of sheete D from the web or strip B when the same is passed through the rotary shear A.

The rolls l2, I3 have shaft extensions, l5 their ends and these are iournaled in suitable hearings in a machine frame I}. one of the shaft extensions Ii of the lower roll projects out beyond the machine frame as at I! (as viewed at the-right Fig, 1) andthlsservesasthemalndriveshaft of the machine and may be operated in any suitable manner.

Itisnecessarythatbothrolls "and" operate 7 inexact synchronism so that their die members gear I! is mounted on the end of the shaft extension IS of'the roll it and meshes'with a drive gear 2| mounted on the end of the shaft extension ll of roll l2.

Rolls l2, is do not engage, one anotherbut are spaced apart, feed rollers 22 being employed to advance the web or strip B through the machine. Rollers 22 are locatedabove'and below a feed table 23 along which the web may be fed and guided. The feed rollers are parallel to and are located adjacent the rolls II, II and have shaft extensions 24 at the end; which arejournaled in suitable hearings in the machine main frame IS.

The feed rollers flare-operated in and by driv-, An idler sear 25. carried on a stud 28 mounted in the ing connection with the rolls l2, ll.

lower feed roller meshes vwith and is driven by a f 8 1' 21. The pper and lower feed rollers thus of the invention engage and feed the web or strip 3 continuously into and through the rotary scroll shear A and a sheet D is severed from the web as illustrated in Figall and 2 for each revolution of the rolls I2 and 3.

Both rolls I2 and I3 and the two carrier units C carried thereby are of the same construction. The die members which are mounted in the units C are similar but'are complementary as to their cutting edges. A description therefore of the lower roll I3 and its die parts, which will now be given, will sullice for both rolls. Each roll is a cylindrical member having a longitudinally extended pocket 32 opening out into the outer periphery of the roll '(Fig. for containing the carrier unit C. The pocket is defined by a seat 33 and a side wall 34 at right angle thereto. This pocket is bordered along the side oppositethe wall 34 by an edge wall 35 which merges into a right-angled ledge 36. The two ends of pocket 32 are closed off by walls 31 all forming an integral part of the roll.

The removable die carrier unit C comprises a die carrier 38 for holding end die members 42, 43, intermediate angular die members 44 and filler die members 45 (Figs. 3, 4 and 5). The die carrier 38 is an elongated element having right angle sides 46, 41. and an angular'side 48, the latter terminating in a channeled ledge 52. This die carrier has a longitudinal slot 53 open at its ends which forms a flat seat for supporting the die members 42, 43, 4 4 in a radial position relative to the roll. The sides 46 and 48 on their outer faces, 1. e., opposed to the wall 41, are of curved profile conforming to the curvature of the roll I2 or I3 The die members 42, 43, 44 are mounted in the slot 53 of the carrier 38 and are held therein by studs 54, there beingone stud threaded into each of the die members (Figs), 2 and 4). These studs extend through holes 55' in the die carrier and into counterbored openings 55 in the side 41 of the carrier. Nuts 51 disposed within the openings 56 and threaded tightly on the studs secure the die members in place.

Die members 42, 43, 44 are spaced accurately in the longitudinal slot 53 of die carrier 38 in accordance with the scroll design of the dies, one set of die members coacting with similar mating die members mountedin an associate carrier during the rotation of the shear rolls. The filler die members 45 are interposed between the die members 42, 43,44, as best shown in Fig. 3, and are located in transverse slots 58 (Figs. 2 and 4) cut across the side 48 and in part in the side 41 of the die carrier. The bottom of the slots 58 forms a tapered seat for holding each die member in a radial position relative to the roll. -.The filler die members, like the die members previously described, also are secured in position in the carrier 38 by studs 54. 4

The die members are locked in position to form the complete die carrier unit C by a locking plate 62 (Figs. 3 and 5) which is secured to the die carrier 38 by bolts 93. This locking plate has a tongue 64 along one edge which fits into the channeled ledge 52 of the die carrier. Filter die members 45 are clamped rigidly against the locking plate 62 by wedge blocks 35 secured in the die carrier 38 by bolts 65 (see also Fig. 2).

Each die carrier unit with all 'of its die parts is accurately aligned and fully assembled as a vunit without regard to the shear roller which will carry the unit. This allows for the desired preparation on the bench and may be performed at a distance from where it is to be used. Figure 5 shows the unit about to be positioned in the roll pocket it is secured by nuts 14. A clamping plate I5 provides for the other right angled anchorage. This clamping plate I5 has a tongue I6 along one face while the opposite face is curved to conform to the cylindrical surface of the roll when assembled therewith. Tongue I9 fits into a channel 11 formed by the locking plate 62, the

edge wall.35 and the ledge 33 (Figs. 3 and 5). Studs I8 anchored in the roll l3 pass through holes'82 and into counterbore'openings 83. Nuts 84 threadedly secured on the studs are disposed in the counterbores 83 and thus secure the clamping plate in position. Slots 8-5 are provided in the clamping plate I5 to clear the bolts 63. The removal of the die carrier unit orparts thereof may be eifected by merely loosening the plate I5.

With the die carrier unit II assembled in the roll I3 as best illustrated in Fig. 3, a transverse scroll cut edge pattern is outlined by the die members which have front and rear cut edges with angular cut edges therebetween. The die members 42, 43 have rear cut edges 92, 93 and angular cut edges 94, 95. Intermediate die memhere 44 have rear cut edges 95 and angular cut edges 91, 98. Filler die members 45 each have a forward cut edge 99.

In like manner similar die members are mounted in the upper roll I2 and they too have a scroll outline which is complementary to and cnactive with the one just described. These scroll edge outlines on the coacting sets of die members are raised above and beyond the circumferential periphery of the rolls I2, I3 (Fig. 2) for intermeshing of their cutting edges. Thus the rotary action of such a scroll shear upon a continuously moving sheet or web effects the severing of front and rear scroll cut edges on the sheets D (Fig. 1).

Since the cut edges of the die members are always-set at right angles with respect to the line of out, each die member-may be moved outwardly for grinding without disturbing the scroll contour of their cut edges. Thus for each redressing of the dies, shims I02 are inserted between the die members and the die carrier, such shims being confined in the slots 53 and 58 (Figs. 2 and 5) Since the resetting and resharpening of die members involve considerable time and particularly with dies used for scroll cutting, the die carrier units C of this invention are most useful under these conditions inasmuch as there results only a minimum loss of time on the factory floor where the dies are being used. In other words an operating line of machines need be stopped only long enough for replacement of the units into the upper and lower rolls. Auxiliary sets of such units fully adjusted are kept on hand for instant use. The sharpening, adjusting and setting of die partsare thus a machine bench opthat various changes may be made in the form, construction and arrangement otthe parts without departing from the spirit and scope of the invention or sacrificing all 01' its material advantages, the form hereinbeiore described being merely a preferred embodiment thereof. I claim: 7 a

1. 'A shearing roll unit for the economical cut-. ting of a continuous web to provide sheets having a scroll edge, comprising a roll formed with a pocket extending longitudinally and opening out into the periphery of the roll, a removable die carrier for said roll having alongitudinal slot, individual die members removably confined within said carrier slot in spaced relation to one another, filler die members removably confined within said slot between said individual die members and circumferentially offset with respect thereto, said individual die members having rear and side cutting edges and said filler die members having forward. cutting edges, the cutting edges of said die members cooperating to cut the scroll.

edge during severing of a sheet from said web, said die members when so confined within the die carrier having their cutting edges extending beyond the periphery of said roll, and means for holding said die can'ier in rigid position within said roll pocket.

2. A shearing roll unit for the economical cuttingoi a continuous web to provide sheets having a scroll edge, comprising a roll formed with a pocket extending longitudinally and opening out into the periphery of the roll, a removable die carrier for said roll having alongitudinal slot, individual die members arrangedrside by side carrier having a longitudinal slot, individual die members removably confined within each carrier slot in spaced relation-to one another, filler die within said carrier slot in spaced relation to one another, filler die members removably confined within said slot between said individual die members and circumferentially onset with respect thereto, said individual die members having rear and side cutting edges and said filler die members having forward cutting edges, the cutting edges of said die members cooperating to cut the scroll edge during severing of a sheet from said web, locking devices for holding said die members confined wlthin the die carrier, and means for hold? ing said die carrier in rigid position within said roll pocket so that the cutting edges of said die members extend beyond the periphery of said roll. 3. A shearing roll unit for the economical cutting of acontinuous web to provide sheets having a scroll edge, comprising a roll formed with .a

pocket extending longitudinally and opening out into the periphery or the roll, the ends of said pocket being spaced inwardly from the ends 01 said roll, a removable die carrier for said roll having a longitudinal slot, individual die members having straight out edges and angular cut edges arranged side by side. each memberbeing threadedly securedwithin said carrier slot, lock- 7 ing devices ior'holding said die members in alignment for cutting the scroll edge during severing of a sheet from said web, said die members when so confined within the die carrier having their cutting edges extending beyond the periphery oi said roll, and means for holding said die carrier in rigid position within said roll pocket. 4. In a machine for economically cutting a continuous web 01' material into sheets having a members removably conilned within said slot between said individual die members and circumierentially oflset with respect thereto, said indiroll coasting with the die members of the other roll during their rotation for cutting the scroll edge during severing of a sheet from said web.

5. A shearing roll unit for the economical cutting of a continuousweb to provide sheets having a scroll edge, comprising a roll formed with a pocket extending longitudinally and opening out into the periphery of the roll, a removable die carrier for said roll having a longitudinal slot, individual die members removably confined within said carrier slot in spaced relation to one another, fllfer die members removably confined within said slot between said individual die members andcircumierentially oifset with respect thereto, said individual die members having rear and side cutting edges and said filler die members havingiorward cutting edges, the cutting edges of said die members cooperating to cut the scroll edge during severing of a sheet from said web, said die members when so confined within the die carrier having their cutting edges extending- Y a scroll edge, comprising a roll formed with a pocket extending longitudinally and opening out into the periphery of the roll, a removable die carrier for said roll having a longitudinal slot, individualdle members removably confined within said carrier slot in spaced relation to one another, flller die members removably confinedwithin said slot between said individual die memedges of said die members cooperating to cut the scroll edge contour, the combination oi a pair of, I

rotatable shearing roll 'imits, the roll or each unit having .a pocket extending londitudinally and opening out into the periphery of the roll, a removable die carrier is: each of said rolls, each,

scroll edge during severing of a sheet from said web, said die members when so confined within the die carrier having their cutting edges extending beyond the periphery of said roll,- adjustable shim means disposed between said die membersand said die carrier for holding said die members in an outwardly s ed position beyond said roll so thatthe outer races 01' the die members y be held in. cutting position to compensate for grinding oi-the outer faces in sharpening their cutting ed s; and a clamping p e mounted on said roll for holding said die carrier in field positionwithin' said roll pocket.

'I. A shearing roll unit for the economical cuttin: or a continuous web to provide sheets having a scroll edge, comprising a roll formed with a pochctextmdlnglmgitudlnallyandopening-cut 4 aaaavev I die carrier having their cutting edges extending beyond the periphery -of said roll, said die members being movable outwardly of said die carrier and having inner radially disposed side walls and cooperating straight and parallel side walls to facilitate such outward movement so that the outer races of the .die members may be ground oil. to sharpen their cutting edges while maintaining the scroll contour of the members. and means for holding said die carrier in rigid position within said roll pocket.

8. A shearing roll unit for the economical cutting ot a continuous web to provide sheets having a scroll edge, comprising a roll formed with a pocket extending longitudinally and opening out into the periphery of the roll, the ends of said pocket being spaced inwardly from the ends of said roll, a removable die carrier for said roll having. a longitudinal slot, and a plurality oi spaced and parallel transverse slots, individual die members arranged in spaced order in said longitudinal slot and having straight cutting edges and angular cutting edges forming a portion of a scroll shear layout, separate individual die members arranged in spaced order between said first mentioned die members and disposed in said transverse slots and having straight cutting edges cooperating with the cutting edges or said first mentioned die'mernbers for completing the scroll shear layout, bolt connections securing said die members in place in their slots, a clamp plate secured to said die carrier and bridging said the periphery of the roll, the ends of said pocket being spaced inwardly from the ends oi. said roll, a removable die carrier for said roll having a longitudinal slot. and a plurality of spaced and parallel transverse slots, individual die members arranged in spaced order in said longitudinal slot and having straight cutting edges and angular cutting edges forming a portion of a scroll shear layout, separate individual die members arranged in spaced order between said first mentioned die members and disposed in said transverse slots and having straight cutting edges cooperating with 'the cutting edges of said first mentioned die members for completing the scroll shear layout, a flat seat in said die carrier at the bottom of said longitudinal slot for locating said first mentioned die members in a radial position relative to said roll, tapered seats in said die carrier at the bottom or said transverse slots for locatlns the separate die members in a radial position relative to said roll, bolt connections securing said die members in place in their slots, a clamp plate secured to said die carrier and bridging said transverse slots for backing up said separate die members, wedge means disposed between said die carrier, and said separate die member; for accurately locating them in place against said clamp plate, and means for holding said die carrier in rigidposition within said roll pocket.

10. In a machine for economically cutting a continuous .web of material into sheets having a scroll edge contour, the combination or an upper roll having .a pocket extending longitudinally thereof, a lower roll located beneath said upper roll and also having a longitudinal pocket, means for teeding sald web or material between said transverse slots for backing up said separate die members, wedge means disposed between said die carrier and said separate die members for accurately locating them in place against said clamp Y plate, and means for holding said die carrier in rolls tor transversely cutting said scroll edge while severing a sheet from the web, a removable die carrier for each of said rolls having a longitudinal slot, individual die members removably confined within each carrier-slot in spaced relation to one another, filler die members removably confined within said slot between said individual die members and circumierentially onset with respect thereto, said individual die members having rear and side cutting edges and said filler die members having forward'cutting edges. the cutting edges of said die members cooperating to cut the scroll edge, and means for holding each die carrier in rigid position within its roll pocket, the scroll cutting edges of one roll corresponding to the scroll cutting edges of the other roll and coacting during advancement of the web between said rotating rolls to sever a sheet therefrom.

l RONALD E. J. NORDQUIST. 

